Cleansing of linen, woolen, cotton, and other goods.



FRIEDRICH LU'DWIG BARTELT, 0F CORSTON LODGE, NEAR BRISTOL, ENGLAND.

CLEANSING OF LINEN, WOOLEN, COTTON, AND OTHER GOODS.

No Drawing.

To all whom it may concern:

Be it known that I, FRIEDRICH LUDWIG BARTELT, a subject of the King ofGreat Britain, and resident of Corston Lodge, near Bristol, England,gentleman, have invented new and useful Improvements Relating to theCleansing of Linen, Woolen, Cotton, and other Goods, of which thefollowing is a specification.

The prevailing practice in the treatment of cotton, linen, and otherfabrics during the process of washing and bleaching is in the ordinaryway to apply oxidizing materials, fatty acids (soaps) and alkalineproducts which are calculated to remove from the fiber all gum, wax, oiland other fatty matter, also all adhesive foreign substances notappertaining to the fiber. Consequently all natural lubrication iswithdrawn from the fiber by these means, and the pliability, firmness,and durability of the same are very considerably impaired. Repeatedwashing and drying under such conditions would make the fiber brittleand tender and shorten the life considerably.

According to my invention I'employ a method of nourishing the fiber bymeans of lubricating agents which will maintain the fiber pliable, firm,and durable however often it may be washed.

For this purpose I employ in washing and cleansing the fabrics andremoving starch and other adhesive matters therefrom, carbonate of sodaas base mixed with glycerin, which carbonate of soda is suitable forwashing and cleansing and which will partially dissolve in contact withglycerin. I take carbonate of soda (58% alkali) finely ground and Ithoroughly mix with it an aqueous solution of glycerin. As require onlya small percentage of glycerin I employ an aqueous solution in order topermeate the whole mass of carbonate of soda uniformly and throughoutwith glycerin. This mixture should be allowed to stand until theglycerin has had time to act upon the carbonate of soda, to dissolve itto such a degree that the whole mass becomes very smooth and to touchbutter-like. The compound in this condition is hygroscopic when exposedto air.

Specification of Letters Iatent.

Patented May 28, 1918.

Application filed December 10, 1914. Serial No. 876,592.

I have found that a mixture with 5% of fering with the cardinalconditions of the base of glycerin and carbonate of soda compound as awashing, cleansing, and nourish- 1ng agent.

For instance I may add zinc in soluble form. In preparing the compoundwith zinc I add to an aqueous solution of hydroxid of potash or hydroxidof'soda, about 5% zinc, or a zinc salt, preferably metallic zinc untilthe same is entirely dissolved and the solution forms a water clearliquor To this solution I add-about 5% glycerin under agitation to forma homogeneous mass. To this liquor I add between 50% and 60% ofcarbonate of soda, preferably 58% alkali in powdered form and mix thewhole thoroughly until it becomes one even mass. During this process agreat deal of heat is generated. I allow the whole to stand until theaction of the glycerin upon the carbonate of soda is complete and thewhole product cooled down and formed into a firm mass.

lVhen this is accomplished I pass the whole through rollers or a mill,reducing it into a more or less powdery form, which when pressed betweenthe fingers will have a soft soapy feel. If the product is required toshow a lather or foam during the process of cleansing, I mayadvantageously add during the manufacturing process, 5% of suitableproteids or fatty acids, preferably in solution so as to combinereadily, evenly and homogeneously with the whole. I do not bind myselfto the quantities mentioned as they may be varied in accordance withrequirements.

Such a cleansing compound gives a greater firmness to the fiber andreduces fiufiing of fabric or fiber during the process of cleansing orwashing, very considerably.

It will be understood that this is not a.

saponified mixture or soap.

What TL claim and desire to secure by Letters Patent of the United Siss-hes is:--

A cleansing compound for fabric or fibers from which fabrics are madez,consisting essexrbially of carbonate of Sada, and glyceria and having;ineorpsrated therewith a, solubl s zinc ait in substantiafiy shepz'opuriaiws specifiez ze in fiestimony whereof I have m'gned my --ameto thls speclficatlon m the presencs of 19 JLWO subscmbmg WIZHESSBS.

FRIEDRICH LUDWIG BABTEELT.

S. BIBEOP9 A: Dmwm,

